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Mainboard Asrock B550M Pro4 ; Chipset. - AMD B550 ; RAM hỗ trợ, - Dual Channel DDR4 Memory Technology - 4 x DDR4 DIMM Slots

I have a Laptop which had 4GB RAM first so it had single channel memory mode now my laptop has 2 slots only 1 is filled so i put 1 more same speed same specs but 8GB RAM stick so i want to know that will i have dual channel memory mode for 4gb ram + 8gb…

RAM hỗ trợ. - Dual Channel DDR3/DDR3L Memory Technology - 2 x DDR3/DDR3L DIMM Slots - Supports DDR3/DDR3L 1866(OC)/1600/1333/1066 non-ECC, un-buffered memory